SU1673155A1 - Wastewater treatment plant - Google Patents

Abstract

The invention relates to the oil industry, in particular to devices for the treatment of wastewater from hydrocarbon contaminants and mechanical impurities and can be used in the extraction and preparation of oil in the fields. The aim of the invention is to simplify the design and increase the degree of purification. The installation contains a cylindrical vertical tank 1 with a vertical pipe 12, along the perimeter of which nozzles 13 are located. Below the nozzles are cleaning chambers 2 with radial partitions. The lower outer part of the cleaning chambers is equipped with inclined shelves 6, ending with hydraulic locks 7, including annular partitions 8 and 9 and overflow pipes 10 installed on the bottom with funnels 11. The tank is equipped with oil 15 and water discharge pipelines 16, gas pressure regulator 17 and regulator 18 level. During cleaning and repair work, the vertical pipe 12 with the cleaning chambers 2 mounted on it is removed through a connector in the upper part of the container. 2 Il.

Description

The invention relates to the oil industry, in particular to devices for the treatment of wastewater from hydrocarbon contaminants and mechanical impurities, and can be used in the extraction and preparation of oil in the fields.

The purpose of the invention is to simplify the design and increase the degree of purification.

FIG. 1 shows an installation, a longitudinal section: FIG. 2 is a view of FIG. 1 is a perspective view.

 The installation includes a cylindrical vertical tank 1. cleaning chambers 2 located along the height of the tank with a gap to its inner wall and between them

and formed by cylindrical shells 3 with a bottom 4, and radial partitions 5. The upper edges of partitions 5 are located above the top of the sides 3. The sides 3 are connected to the shelves 6 with hydraulic locks 7 at the ends formed by ring partitions 8 and 9.

In front of the hydraulic seals 7, overflow pipes 10 with funnels 11 are installed. The upper edges of which are located below the upper edge of the annular partition 8. A vertical pipe 12 is installed along the axis of the tank 1 and provided with nozzles 13 placed evenly along its outer perimeter above each cleaning chamber 2. Nozzles outlets 13 directed VI

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to the pipe 12. The vertical pipe 12 is mounted on the support 14. The container 1 is equipped with pipelines for the discharge of oil 15 and water 16, the gas pressure regulator 17 and the level regulator 18, ensuring the filling of the apparatus with liquid within the specified values.

The installation works as follows.

Water with a density of 1017 kg / m at a temperature of 13.7 ° C in the amount of 2205 m / day, containing 4207 mg / l of oil and 202 mg / l of solid suspended particles coming from the pre-discharge assembly is fed to the installation through pipe 12 1020 mm and a height of 4.5 m. At the same time, water from the nozzles 13 is jetsted out and, passing through the gas layer and ejecting gas with it, enters the water layer located in the zone adjacent to the vertical pipe of the cleaning chambers 2. The flow of water at the bottom of the chambers 18-20 cm deep turns 180 ° and rushes upwards along with the bubbles of the ejected gas. The latter capture oil droplets and other impurities on their shells and burst at the liquid-gas interface and, under the influence of intermolecular forces, become film-like. The fluid flow, expanding along the path of movement from the center of chambers 2 to shell 3 and further down on shelves 6, constantly exposes more and more new liquid surfaces, which is why the effect of the transition of spherical particles to the film state increases many times, while the cleaning efficiency increases significantly. water. A stream of water with film oil enters the hydraulic lock 7, from which the caught oil through the pipes 10 is transferred to the lower located chambers 2 and eventually to the lower part of the tank 1, from there it is diverted through the pipeline 15 to further processing. Purified water from water traps 7 in the gap

between them and the wall of the tank flows into its lower part, and from there through the pipeline 16 is diverted For further use. The gas involved in the water treatment process is returned to the top of the tank and reused. Excess gas is discharged through a pressure regulator 17, by which excess gas is discharged, which enters the apparatus together with water.

When carrying out cleaning and repair work, the vertical pipe with the cleaning chambers mounted on it is removed through the connector in the upper part of the tank.

Thus, the multi-storey arrangement of the cleaning chambers in the proposed installation ensures its compactness, reduces the metal consumption, capital and operating costs.

In addition, the installation provides deep cleaning of waste water from oil and solid suspended particles.

Claims (1)

The invention The wastewater treatment plant, including a vertical tank, purification chambers with overflow pipes, located along the height of the tank with a gap to its inner wall and between them, a vertical pipe for the supply of purified water installed along the axis of the tank; so that, in order to simplify the construction and increase the degree of cleaning, the cleaning chambers are made in the form of cylindrical shells and radial partitions placed inside them, the vertical pipe is provided nozzles evenly spaced along its outer perimeter above each cleaning chamber, with the nozzles outlet openings directed to the vertical pipe, and the upper edges of the radial partitions are located above the upper edge of the shell. oil // AL Yu 4U 15 - , -14 Fig 2